BGS mineralogy and petrology collection record

Sample number E61624; COLLNOMH1538;
Sample Donor Howells,M.F.
Rock name Tuff, Rhyolitic .
Stratigraphy Not entered
Comments Basalt/basic tuff
Locality details Craig Las
50k map sheet Barmouth (149)

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Map reference SN 6810 1137
Year collected Not entered 
Bore name Not applicable
Confidentiality No restrictions

Petrological thin sections

Links to high resolution images

Transition from XPL to PPL light


Cross Polarized, E61624

Plane Polarized, E61624

Plane Polarized, E61624